/*******************************************************************************
 * Copyright 2009 
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
/**
 * Place holder for copyright, needs to be replaced before release.
 */
package com.softao.ming.gwt.core.internal.runtime.client;

import java.util.HashMap;
import java.util.Map;

import com.softao.ming.gwt.core.runtime.client.application.IObjectFactory;

/**
 * Object factory which creates the object.
 */
public class ObjectFactory implements IObjectFactory {
	private final Map<String, IObjectFactory> mObjectFactoryMap;
	
	/**
	 * 
	 */
	public ObjectFactory() {
		mObjectFactoryMap = new HashMap<String, IObjectFactory>();
	}
	
	/**
	 * @param objectFactory
	 */
	public void merge(IObjectFactory objectFactory) {
		for (String className : objectFactory.getClassNames()) {
			if (!mObjectFactoryMap.containsKey(className)) {
				mObjectFactoryMap.put(className, objectFactory);
			}
		}
	}
	
	@Override
	public <T> T create(Class<T> type, String className) {
		if (mObjectFactoryMap.containsKey(className)) {
			return mObjectFactoryMap.get(className).create(type, className);
		} else {
			throw new RuntimeException("Class " + className + " can not be found.");
		}
	}

	@Override
	public String[] getClassNames() {
		return mObjectFactoryMap.keySet().toArray(new String[mObjectFactoryMap.size()]);
	}

}
